When the tungsten oxide material is used in the electrochromic (EC) window of electrochromic devices (ECD), three modes can be achieved, namely, a bright mode when the transmittance of both visible and near-infrared light is relatively high; a cool mode when the transmittance of visible light is high and the transmittance of near-infrared light is relatively low; and a dark mode when the transmittance of both of them is low. cooling mode when the transmittance of both is low; and the dark mode when the transmittance of both is low.

Researchers fabricated 1D W₁₈O₄₉ nanomaterials for near-infrared shielding of electrochromic devices. These tungsten oxide films all had high transmittance in the visible region. However, the researchers did not explore the change in transmittance during the color change. The researchers fabricated a flexible electrochromic device (ECD) with 63% transmission modulation between 760 and 1600 nm, yet did not tap the relationship between the transmission of visible and near-infrared light.

Most previous studies on tungsten oxide for the application of electrochromic electrodes have focused on improving its electrochromic performance in the visible spectral region while neglecting electrochromic performance in the near-infrared (NIR) and infrared (IR) spectral regions. Previous research objects have focused on obtaining WO₃ conductive films with wider light modulation amplitude, shorter response time, and higher coloration efficiency in the visible region.

Analysis of latest tungsten market from Chinatungsten Online

Chinese tungsten market is expected to continue to be strong in the short term as there are many positive news in the market. 

China rare earth price is weak in the week ended on Friday February 10, 2023. Under the interweaving of positive and negative factors, the buyer’s market has a greater advantage. 

China molybdenum price stabilized in the week ended on Friday February 10, 2023. Under the weak supply and demand, the enthusiasm of traders to enter the market was significantly lower than that before and after the Spring Festival. 

Cleaned tungsten wire refers to tungsten wire that has been treated to remove impurities and surface contaminants, resulting in a purer and more homogeneous wire. This type of tungsten wire is often used in high-temperature and high-performance applications, such as electrical discharge machining (EDM) and electron beam welding. 

Black tungsten wire is a type of tungsten wire that has been coated with a black oxide to enhance its corrosion resistance and provide a sleek, black appearance. Tungsten is a dense, metallic element with a high melting point, making it an ideal material for high-temperature applications, such as heating elements and electrical conductors.

Analysis of latest tungsten market from Chinatungsten Online

China’s ammonium paratungstate (APT) and tungsten powder prices keep firm on February 8, 2023 as the increase of new guide prices for this month shored up market confidence. 

The introduction of carbon material into tungsten oxide to obtain tungsten oxide-carbon composites owns several advantages. One is that the composite material can integrate the advantages of tungsten oxide and carbon materials. Another is that it is more likely to form simple structures with high structural stability. Graphene is a flat monolayer based on a honeycomb lattice of single carbon atom layers.